I have looked through threads here and on a few manufacturers sites but have not found what I am looking for, namely a roof rack with a roller at the back to assist with shunting a boat on top. I have a couple of duck punts that weigh about 150-200lbs and it is awkward for me to load and unload these myself. I can do it but it involves a lot of effort, colourful language and the potential of damaging my rig unnecessarily. A roller that integrated with a rack would allow me to lift one end on the roller, rest it, and then grab the other end and push it up the rest of the way up. Anyone familiar with such a set up or have an innovative way of dealing with the same challenge?